cleanup and improve tests of utils package

utils/log_test.go

@@ -0,0 +1,57 @@
+package utils
+
+import (
+	"bytes"
+	"os"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Log", func() {
+	var (
+		b *bytes.Buffer
+	)
+
+	BeforeEach(func() {
+		b = bytes.NewBuffer([]byte{})
+		out = b
+	})
+
+	AfterEach(func() {
+		out = os.Stdout
+		SetLogLevel(LogLevelNothing)
+	})
+
+	It("log level nothing", func() {
+		SetLogLevel(LogLevelNothing)
+		Debugf("debug")
+		Infof("info")
+		Errorf("err")
+		Expect(b.Bytes()).To(Equal([]byte("")))
+	})
+
+	It("log level err", func() {
+		SetLogLevel(LogLevelError)
+		Debugf("debug")
+		Infof("info")
+		Errorf("err")
+		Expect(b.Bytes()).To(Equal([]byte("err\n")))
+	})
+
+	It("log level info", func() {
+		SetLogLevel(LogLevelInfo)
+		Debugf("debug")
+		Infof("info")
+		Errorf("err")
+		Expect(b.Bytes()).To(Equal([]byte("info\nerr\n")))
+	})
+
+	It("log level debug", func() {
+		SetLogLevel(LogLevelDebug)
+		Debugf("debug")
+		Infof("info")
+		Errorf("err")
+		Expect(b.Bytes()).To(Equal([]byte("debug\ninfo\nerr\n")))
+	})
+})